Stock Request Sequence Option

This module adds stock requests and stock request orders to the list of documents that can use optional numbering sequences.

• In the sequence option configuration (provided by the base_sequence_option module), you can now select stock.request or stock.request.order as the document type, and define one or more alternative sequences with their own prefixes and filters.
• When a stock request or a stock request order is created, Odoo automatically looks up the matching sequence option line and uses that sequence to generate the document's reference number.
• Two ready-made sequence options are installed: one named "Stock Request" and one named "Stock Request Order". Both are inactive by default, so numbering only changes once you enable them.
• Demo data shows example sequences with prefixes such as "SR-1/" and "SRO-1/" and a five-digit padding, illustrating how alternative numbering can look.

The module touches the sequence option configuration model ir.sequence.option and extends the creation logic of stock.request and stock.request.order. It does not add new menus or screens of its own; the configuration is done through the existing sequence option screens.